package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.minio.MinioProperties;
import com.atguigu.lease.web.admin.service.FileService;
import io.minio.*;
import io.minio.errors.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;

@Service
public class FileServiceImpl implements FileService {

    @Autowired
    private MinioProperties minioProperties;
    @Autowired
    private MinioClient minioClient;

    @Override
    public String upload(MultipartFile file) throws ServerException, InsufficientDataException, ErrorResponseException, IOException, NoSuchAlgorithmException, InvalidKeyException, InvalidResponseException, XmlParserException, InternalException {
        //判断桶是否存在,不存在创建
        boolean bucketExists = minioClient.bucketExists(BucketExistsArgs.builder().bucket(minioProperties.getBucketName()).build());
        if (!bucketExists) {
            minioClient.makeBucket(MakeBucketArgs.builder().bucket(minioProperties.getBucketName()).build());
            //设置权限
            String config = """
                        {
                              "Statement" : [ {
                                "Action" : "s3:GetObject",
                                "Effect" : "Allow",
                                "Principal" : "*",
                                "Resource" : "arn:aws:s3:::%s/*"
                              } ],
                              "Version" : "2012-10-17"
                        }
                    """.formatted(minioProperties.getBucketName());
            minioClient.setBucketPolicy(SetBucketPolicyArgs.builder().bucket(minioProperties.getBucketName()).config(config).build());
        }

        //用于优化文件名,确保不会重复,因为文件名重复会发生覆盖
        String objectName = new SimpleDateFormat("yyyyMMdd").format(new Date()) + "/" + UUID.randomUUID().toString() + "_" + file.getOriginalFilename();

        minioClient.putObject(PutObjectArgs.builder()
                .bucket(minioProperties.getBucketName())
                .contentType(file.getContentType())//设置上传文件的类型
                .object(objectName)
                .stream(file.getInputStream(), file.getSize(), -1) //分别为上传文件的输入流,大小和自动切割
                .build());

        return String.join("/", minioProperties.getEndPoint(), minioProperties.getBucketName(), objectName);
    }


}